The Alfven-wave theory of solar flares

Details The Alfven-wave theory of solar flares The Alfven-wave theory of solar flares

Oct 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974soph...38..465p&link_type=abstract

Solar Physics, vol. 38, Oct. 1974, p. 465-481.

Physics

23

Magnetohydrodynamic Waves, Solar Flares, Solar Magnetic Field, Solar Physics, Helical Flow, Lines Of Force, Magnetic Field Configurations, Magnetic Flux, Particle Acceleration, Plasma Dynamics, Solar Corona, Sunspots

Scientific paper

Evidence is discussed showing that a representative solar flare event comprises three or more separate but related phenomena requiring separate mechanisms. In particular it is possible to separate the most energetic effect (the interplanetary blast) from the thermal flare and from the rapid acceleration of particles to high energies. The phenomena are related through the magnetic structure characteristic of a composite flare event, being a bipolar surface field with most of its field lines 'closed'. Of primary importance are helical twists on all scales, starting with the 'flux rope' of the spot pair which was fully twisted before it emerged. Subsequent untwisting by the upward propagation of an Alfven twist wave provides the main flare energy.-

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